Three Scientists Are Using Different Forms of PCR for Their

Multiple Choice

Three scientists are using different forms of PCR for their research.Abby wants to determine changes in gene expression levels in a tissue, so she uses ______.Bob is trying to extract genetic information from a wooly mammoth fossil, so he uses ______.Chris needs to express a gene in bacteria that matches the form expressed in kidney cells, so she uses ______.

A) Quantitative RT-PCR; PCR; RT-PCR
B) PCR; quantitative RT-PCR; RT-PCR
C) RT-PCR; PCR; quantitative RT-PCR
D) RT-PCR; quantitative RT-PCR; PCR